/* CSS Variables for Color Scheme and Theme Management */
:root {
    /* Light Theme Colors */
    --primary-green: #2d5016;
    --secondary-green: #4a7c59;
    --accent-gold: #d4af37;
    --light-gold: #f4e4a6;
    --pure-black: #000000;
    --dark-gray: #1a1a1a;
    --light-gray: #f5f5f5;
    --pure-white: #ffffff;
    --text-dark: #333333;
    --text-light: #666666;
    
    /* Additional Colors */
    --success-green: #28a745;
    --warning-orange: #fd7e14;
    --info-blue: #17a2b8;
    --error-red: #dc3545;
    --card-shadow: rgba(0, 0, 0, 0.1);
    --hover-shadow: rgba(0, 0, 0, 0.15);
    
    /* Theme Variables */
    --bg-primary: var(--pure-white);
    --bg-secondary: var(--light-gray);
    --text-primary: var(--text-dark);
    --text-secondary: var(--text-light);
    --nav-bg: var(--pure-white);
    --card-bg: var(--pure-white);
    --border-color: #e0e0e0;
    
    /* Typography */
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-padding: 0 20px;
    --border-radius: 12px;
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --bg-primary: var(--pure-black);
    --bg-secondary: var(--dark-gray);
    --text-primary: var(--pure-white);
    --text-secondary: #cccccc;
    --nav-bg: var(--dark-gray);
    --card-bg: var(--dark-gray);
    --border-color: #333333;
}

/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Keyboard focus indicator — gold outline on all interactive elements */
:focus-visible {
    outline: 2px solid var(--accent-gold);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Suppress focus ring for mouse users on elements that handle their own focus styles */
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-fast), color var(--transition-fast);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    font-weight: 600;
    line-height: 1.2;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-green);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-gold), var(--secondary-green));
    border-radius: 2px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all var(--transition-fast);
}

.navbar.scrolled {
    background: var(--nav-bg);
    box-shadow: 0 2px 20px var(--card-shadow);
    opacity: 0.97;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo a {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-green);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-logo a:hover {
    color: var(--accent-gold);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--accent-gold);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: width var(--transition-fast);
}

.nav-link:hover::after {
    width: 100%;
}

/* Used on brand.html for regular nav links — same style as .nav-link but not
   intercepted by NavigationManager's querySelectorAll('.nav-link') */
.nav-link-ext {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link-ext:hover {
    color: var(--accent-gold);
}

.nav-link-ext::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: width var(--transition-fast);
}

.nav-link-ext:hover::after {
    width: 100%;
}

.nav-link-brand {
    color: var(--primary-green);
    border: 1px solid var(--primary-green);
    border-radius: var(--border-radius);
    padding: 6px 14px;
    font-size: 0.85rem;
    font-family: var(--font-primary);
    font-weight: 600;
    transition: var(--transition-fast);
    text-decoration: none;
    letter-spacing: 0.03em;
}

.nav-link-brand:hover {
    background: var(--primary-green);
    color: var(--pure-white);
}

.theme-toggle {
    background: none;
    border: 2px solid var(--primary-green);
    color: var(--primary-green);
    padding: 8px 12px;
    border-radius: 50px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1rem;
}

.theme-toggle:hover {
    background: var(--primary-green);
    color: var(--pure-white);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

.hero-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(74, 124, 89, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(45, 80, 22, 0.05) 0%, transparent 50%);
    animation: float 6s ease-in-out infinite;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    opacity: 0.8;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--container-padding);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.highlight {
    color: var(--accent-gold);
    background: linear-gradient(135deg, var(--accent-gold), var(--secondary-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--primary-green);
    margin-bottom: 1.5rem;
    font-weight: 400;
    min-height: 2rem;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 30px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--primary-green);
    color: var(--pure-white);
    border-color: var(--primary-green);
}

.btn-primary:hover {
    background: var(--secondary-green);
    border-color: var(--secondary-green);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(45, 80, 22, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-green);
    border-color: var(--primary-green);
}

.btn-secondary:hover {
    background: var(--primary-green);
    color: var(--pure-white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(45, 80, 22, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--accent-gold);
    border-color: var(--accent-gold);
}

.btn-outline:hover {
    background: var(--accent-gold);
    color: var(--pure-white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(212, 175, 55, 0.3);
}

/* Hero Section Enhancements */
.hero-badges {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.hero-badge {
    background: var(--light-gold);
    color: var(--primary-green);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-item {
    text-align: center;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px var(--card-shadow);
}

.stat-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.hero-social {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--accent-gold);
    color: var(--pure-white);
    border-color: var(--accent-gold);
    transform: translateY(-3px);
}

.image-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent-gold);
    transition: all var(--transition-fast);
    /* Green background + initials visible while photo loads or if absent */
    background: var(--primary-green);
    font-size: 4rem;
    font-weight: 700;
    color: var(--accent-gold);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    background: rgba(45, 80, 22, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-fast);
}

.image-placeholder:hover .image-overlay {
    opacity: 1;
}

.overlay-content {
    text-align: center;
    color: var(--pure-white);
}

.overlay-text {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.overlay-subtext {
    font-size: 0.9rem;
    opacity: 0.9;
}

.floating-cards {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-card {
    position: absolute;
    background: var(--card-bg);
    border: 2px solid var(--accent-gold);
    border-radius: var(--border-radius);
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--primary-green);
    box-shadow: 0 5px 15px var(--card-shadow);
    animation: float 3s ease-in-out infinite;
}

.floating-card.card-1 {
    top: 10%;
    left: -20px;
    animation-delay: 0s;
}

.floating-card.card-2 {
    top: 50%;
    right: -20px;
    animation-delay: 1s;
}

.floating-card.card-3 {
    bottom: 10%;
    right: -10px;
    animation-delay: 2s;
}

.floating-card.card-4 {
    top: 30%;
    left: -15px;
    animation-delay: 3s;
}

.floating-card.card-5 {
    bottom: 30%;
    right: -15px;
    animation-delay: 4s;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
    transform: rotate(45deg);
    margin: 0 auto 0.5rem;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* Enhanced About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.achievements {
    margin-bottom: 2rem;
}

.achievements h3 {
    color: var(--primary-green);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.achievement-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.achievement-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.achievement-item:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 15px var(--card-shadow);
}

.achievement-item i {
    color: var(--accent-gold);
    font-size: 1.2rem;
    margin-top: 0.25rem;
}

.career-timeline {
    margin-top: 2rem;
}

.career-timeline h3 {
    color: var(--primary-green);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent-gold);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-gold);
    border: 2px solid var(--card-bg);
}

.timeline-date {
    color: var(--accent-gold);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.timeline-content h4 {
    color: var(--primary-green);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.skills-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.skills-grid {
    display: grid;
    gap: 2rem;
}

.skill-category {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--hover-shadow);
}

.skill-category h3 {
    color: var(--primary-green);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.skill-item {
    margin-bottom: 1.5rem;
}

.skill-name {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.skill-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-gold), var(--secondary-green));
    border-radius: 4px;
    width: 0;
    transition: width 1.5s ease;
    position: relative;
}

.skill-progress::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.skill-percentage {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.certifications {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.certifications h3 {
    color: var(--primary-green);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.cert-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.cert-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.cert-item:hover {
    transform: translateX(5px);
    background: var(--light-gold);
}

.cert-item i {
    color: var(--accent-gold);
    font-size: 1.2rem;
}

.cert-item span {
    color: var(--text-primary);
    font-weight: 600;
}

.cert-year {
    color: var(--accent-gold);
    font-weight: 700;
    margin-left: 0.25rem;
}

.cert-badge {
    display: inline-block;
    background: var(--accent-gold);
    color: var(--pure-black);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.15rem 0.5rem;
    border-radius: 20px;
    margin-left: 0.5rem;
    vertical-align: middle;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Tools Section */
.tools-section {
    margin-top: 1.5rem;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.tools-section h3 {
    color: var(--primary-green);
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.tools-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tool-badge {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem 0.9rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    cursor: default;
}

.tool-badge i {
    color: var(--accent-gold);
    font-size: 1rem;
}

.tool-badge:hover {
    border-color: var(--accent-gold);
    background: var(--light-gold);
    transform: translateY(-2px);
}

/* Resume Section */
.resume {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.resume-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.resume-info h3 {
    color: var(--primary-green);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.resume-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.resume-stats {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.resume-stat {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.resume-stat:hover {
    transform: translateX(5px);
    background: var(--light-gold);
}

.resume-stat i {
    color: var(--accent-gold);
    font-size: 1.2rem;
}

.resume-stat span {
    color: var(--text-primary);
    font-weight: 600;
}

.resume-highlights h4 {
    color: var(--primary-green);
    margin-bottom: 1rem;
}

.resume-highlights ul {
    list-style: none;
    padding-left: 0;
}

.resume-highlights li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.resume-highlights li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-weight: bold;
}

.resume-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.resume-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.resume-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px var(--hover-shadow);
}

.resume-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-gold), var(--secondary-green));
}

.resume-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-gold);
    font-size: 1.5rem;
}

.resume-card h4 {
    color: var(--primary-green);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.resume-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.resume-features {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.resume-features span {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.resume-features i {
    color: var(--success-green);
    font-size: 0.8rem;
}

/* Enhanced Projects Section */
.projects-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: 2px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-secondary);
    border-radius: 25px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 600;
    font-size: 0.9rem;
}

.filter-btn:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.filter-btn.active {
    background: var(--accent-gold);
    color: var(--pure-white);
    border-color: var(--accent-gold);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px var(--hover-shadow);
}

/* Work-in-progress project cards */
.project-wip:hover {
    transform: none;
}

.wip-wrapper {
    position: relative;
}

.wip-blur {
    filter: blur(4px);
    user-select: none;
    pointer-events: none;
}

.wip-badge {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--accent-gold);
    color: #1a1a1a;
    padding: 8px 18px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.85rem;
    font-family: var(--font-primary);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 7px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.18);
}

.project-card.hidden {
    display: none;
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--pure-white);
    font-size: 3rem;
    position: relative;
    overflow: hidden;
}

.project-overlay {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.project-category {
    background: var(--accent-gold);
    color: var(--primary-green);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.project-content {
    padding: 2rem;
}

.project-content h3 {
    color: var(--primary-green);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tech-tag {
    background: var(--bg-secondary);
    color: var(--primary-green);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid var(--border-color);
}

.project-metrics {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.metric {
    text-align: center;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    flex: 1;
}

.metric-value {
    display: block;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--accent-gold);
    margin-bottom: 0.25rem;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.project-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.project-link {
    color: var(--accent-gold);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

.project-link:hover {
    color: var(--primary-green);
}

/* About Section */
.about {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-intro {
    font-size: 1.2rem;
    color: var(--primary-green);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.skills-grid {
    display: grid;
    gap: 2rem;
}

.skill-category {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.skill-category h3 {
    color: var(--primary-green);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.skill-category ul {
    list-style: none;
}

.skill-category li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 1.5rem;
}

.skill-category li::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--accent-gold);
    font-size: 0.8rem;
}

/* Projects Section */
.projects {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-green), var(--secondary-green));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--pure-white);
    font-size: 3rem;
}

.project-content {
    padding: 2rem;
}

.project-content h3 {
    color: var(--primary-green);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-video {
    margin: 1.5rem 0;
    border-radius: 8px;
    overflow: hidden;
}

.project-video iframe {
    width: 100%;
    height: 315px;
    border: none;
    border-radius: 8px;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    color: var(--accent-gold);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.project-link:hover {
    color: var(--primary-green);
}

/* Blog Section */
.blog {
    padding: var(--section-padding);
    background: var(--bg-secondary);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.blog-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.blog-image {
    height: 150px;
    background: linear-gradient(135deg, var(--accent-gold), var(--secondary-green));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--pure-white);
    font-size: 2.5rem;
}

.blog-content {
    padding: 2rem;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.blog-date {
    color: var(--text-secondary);
}

.blog-category {
    background: var(--light-gold);
    color: var(--primary-green);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 600;
}

.blog-content h3 {
    color: var(--primary-green);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.blog-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.read-more {
    color: var(--accent-gold);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.read-more:hover {
    color: var(--primary-green);
}

/* Contact Section */
.contact {
    padding: var(--section-padding);
    background: var(--bg-primary);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3 {
    color: var(--primary-green);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-primary);
    text-decoration: none;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.contact-link:hover {
    background: var(--primary-green);
    color: var(--pure-white);
    transform: translateX(10px);
}

.contact-link i {
    font-size: 1.2rem;
    color: var(--accent-gold);
    width: 20px;
}

.contact-form {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-secondary);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Form error state — only shown after user has interacted */
.form-group input:invalid:not(:placeholder-shown),
.form-group textarea:invalid:not(:placeholder-shown) {
    border-color: var(--error-red);
}

/* Form feedback messages */
.form-message {
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 8px;
    font-weight: 600;
    text-align: center;
}

.form-message--success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message--error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Footer */
.footer {
    background: var(--dark-gray);
    color: var(--pure-white);
    text-align: center;
    padding: 2rem 0;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--nav-bg);
        flex-direction: column;
        justify-content: start;
        padding-top: 2rem;
        transition: left var(--transition-fast);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-badges {
        justify-content: center;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 250px;
        justify-content: center;
    }
    
    .hero-social {
        justify-content: center;
    }
    
    .floating-cards {
        display: none;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .achievements h3,
    .career-timeline h3,
    .certifications h3 {
        font-size: 1.2rem;
    }
    
    .achievement-item {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    
    .timeline {
        padding-left: 1.5rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .resume-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .resume-actions {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .projects-filter {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .filter-btn {
        font-size: 0.8rem;
        padding: 0.5rem 1rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .project-card {
        margin-bottom: 1rem;
    }
    
    .project-metrics {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .contact-link {
        flex: 1;
        min-width: 150px;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .profile-img {
        width: 250px;
        height: 250px;
    }
    
    .hero-badges {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    .hero-badge {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
    
    .stat-item {
        padding: 0.75rem;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .achievement-list {
        gap: 0.75rem;
    }
    
    .achievement-item {
        padding: 0.75rem;
    }
    
    .achievement-item i {
        font-size: 1rem;
    }
    
    .timeline-item {
        margin-bottom: 1.5rem;
    }
    
    .timeline-date {
        font-size: 0.8rem;
    }
    
    .timeline-content h4 {
        font-size: 1rem;
    }
    
    .timeline-content p {
        font-size: 0.85rem;
    }
    
    .skill-category {
        padding: 1.5rem;
    }
    
    .skill-category h3 {
        font-size: 1.1rem;
    }
    
    .skill-item {
        margin-bottom: 1rem;
    }
    
    .skill-name {
        font-size: 0.9rem;
    }
    
    .skill-percentage {
        font-size: 0.9rem;
    }
    
    .certifications {
        padding: 1.5rem;
    }
    
    .certifications h3 {
        font-size: 1.1rem;
    }
    
    .cert-item {
        padding: 0.5rem;
    }
    
    .cert-item i {
        font-size: 1rem;
    }
    
    .cert-item span {
        font-size: 0.9rem;
    }
    
    .resume-info h3 {
        font-size: 1.3rem;
    }
    
    .resume-info p {
        font-size: 0.9rem;
    }
    
    .resume-stat {
        padding: 0.75rem;
    }
    
    .resume-stat i {
        font-size: 1rem;
    }
    
    .resume-stat span {
        font-size: 0.9rem;
    }
    
    .resume-highlights h4 {
        font-size: 1rem;
    }
    
    .resume-highlights li {
        font-size: 0.85rem;
        padding: 0.4rem 0;
        padding-left: 1.2rem;
    }
    
    .resume-card {
        padding: 1.5rem;
    }
    
    .resume-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
        margin-bottom: 1rem;
    }
    
    .resume-card h4 {
        font-size: 1.1rem;
    }
    
    .resume-card p {
        font-size: 0.85rem;
        margin-bottom: 1rem;
    }
    
    .resume-features span {
        font-size: 0.75rem;
    }
    
    .projects-filter {
        gap: 0.25rem;
    }
    
    .filter-btn {
        font-size: 0.75rem;
        padding: 0.4rem 0.8rem;
    }
    
    .project-card {
        margin-bottom: 0.75rem;
    }
    
    .project-image {
        height: 150px;
        font-size: 2rem;
    }
    
    .project-content {
        padding: 1.5rem;
    }
    
    .project-content h3 {
        font-size: 1.1rem;
    }
    
    .project-video iframe {
        height: 200px;
    }
    
    .project-description {
        font-size: 0.9rem;
        margin-bottom: 1rem;
    }
    
    .tech-tag {
        font-size: 0.7rem;
        padding: 0.2rem 0.6rem;
    }
    
    .metric {
        padding: 0.5rem;
    }
    
    .metric-value {
        font-size: 1rem;
    }
    
    .metric-label {
        font-size: 0.7rem;
    }
    
    .project-link {
        font-size: 0.8rem;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
    }
    
    .blog-card {
        margin-bottom: 1rem;
    }
    
    .blog-image {
        height: 120px;
        font-size: 2rem;
    }
    
    .blog-content {
        padding: 1.5rem;
    }
    
    .blog-content h3 {
        font-size: 1.1rem;
    }
    
    .blog-content p {
        font-size: 0.9rem;
        margin-bottom: 1rem;
    }
    
    .blog-meta {
        font-size: 0.8rem;
    }
    
    .contact-form {
        padding: 1.5rem;
    }
    
    .form-group {
        margin-bottom: 1rem;
    }
    
    .form-group label {
        font-size: 0.9rem;
    }
    
    .form-group input,
    .form-group textarea {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .social-link {
        width: 35px;
        height: 35px;
    }
    
    .social-link i {
        font-size: 0.9rem;
    }
}